Will my skin tighten up after I've lost weight?

I’m 29 years old with 2 kids. I have lost a significant amount of weight a couple of times when I was younger and my skin had no problem tightening up. Buuuut I’ve lost 30 lbs since January and I notice now that it’s not rebounding like it used to. I almost feel like I look worse because I feel all squishy :-). I know that skin loses elasticity as we age so I know this is not uncommon. Has anyone near my age ever lost alot of weight and was able to tighten back up? Or am I doomed because of my age?!? Any specific exercises that actually worked for you? I don’t want to look like Im melting lol!!